A large mains powered early calculator with 8 columns of plastic buttons with the numbers 1 to 9 on them. At one side of these there is a square key pad with numbers 0 to 9 and a -/+ sign switch. On the other side there are the function keys; +,-,…
Stone axe Olmec style, Guerrero, Mexico, 1500 B.C.-A.D.300 The polished surface of this porphyry axe blade is engraved, in fine lines, with a divine figure wearing a jaguar mask and holding a club or burning torch. The Olmex style spread from its…